8078112: [TESTBUG] Integrate Selection/Resolution test suite into jtreg tests

Reviewed-by: ctornqvi, acorn

hotspot/test/runtime/SelectionResolution/classes/selectionresolution/ClassConstruct.java

@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package selectionresolution;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import jdk.internal.org.objectweb.asm.ClassWriter;
+import jdk.internal.org.objectweb.asm.Opcodes;
+
+public abstract class ClassConstruct {
+    private final ClassWriter cw;
+    private final String name;
+    private final boolean isInterface;
+    private final int index;
+
+    /**
+     * Base constructor for building a Class or Interface
+     * @param name Name of Class/Interface, including package name
+     * @param extending Name of extending Class if any
+     * @param access Access for Class/Interface
+     * @param classFileVersion Class file version
+     * @param interfaces Interface implemented
+     */
+    public ClassConstruct(String name,
+                          String extending,
+                          int access,
+                          int classFileVersion,
+                          int index,
+                          String... interfaces) {
+        this.name = name;
+        isInterface = (access & Opcodes.ACC_INTERFACE) == Opcodes.ACC_INTERFACE;
+        cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
+        cw.visit(classFileVersion, access, name, null, extending, interfaces == null ?  new String[] { } : interfaces);
+        this.index = index;
+    }
+
+    /**
+     * Get full Class/Interface name including package name, as it
+     * should appear in a classfile.
+     *
+     * @return The full Class/Interface name including package name
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Get the name of the class, including package as it would appear
+     * in Java source.
+     *
+     * @return The name of the class as it would appear in Java source.
+     */
+    public String getDottedName() {
+        return name.replace("/", ".");
+    }
+
+    public String getPackageName() {
+        final int idx = name.lastIndexOf('/');
+        if (idx != -1) {
+            return name.substring(0, name.indexOf('/'));
+        } else {
+            return null;
+        }
+    }
+
+    public String getClassName() {
+        final int idx = name.lastIndexOf('/');
+        if (idx != -1) {
+            return name.substring(name.indexOf('/'));
+        } else {
+            return name;
+        }
+    }
+
+    /**
+     * Add a method, no code associated with it yet
+     * @param name Name of method
+     * @param descriptor Descriptor for method
+     * @param access Access for the method
+     * @return Method object that can be used for constructing a method body
+     */
+    public Method addMethod(String name,
+                            String descriptor,
+                            int access) {
+        return addMethod(name, descriptor, access, null);
+    }
+
+    /**
+     * Add a method, no code associated with it yet
+     * @param name Name of method
+     * @param descriptor Descriptor for method
+     * @param access Access for the method
+     * @param execMode The execution mode for the method.
+     * @return Method object that can be used for constructing a method body
+     */
+    public Method addMethod(String name,
+                            String descriptor,
+                            int access,
+                            ClassBuilder.ExecutionMode execMode) {
+        return new Method(this, cw, name, descriptor, access, execMode);
+    }
+
+    /**
+     * Adds a m()LTestObject; method which returns null unless the method is abstract
+     * @param access Access for the method
+     */
+    public void addTestMethod(int access) {
+        Method m = new Method(this, cw, Method.defaultMethodName, Method.defaultMethodDescriptor, access, null);
+        if ((access & Opcodes.ACC_ABSTRACT) != Opcodes.ACC_ABSTRACT) {
+            m.makeDefaultMethod();
+        }
+    }
+
+    /**
+     * Construct the class to a byte[]
+     * @return byte[] with class file
+     */
+    public byte[] generateBytes() {
+        cw.visitEnd();
+        return cw.toByteArray();
+    }
+
+    /**
+     * Write out a class to a file in the specified directory.
+     *
+     * @param dir Directory to which to write out the file.
+     */
+    public void writeClass(final File dir) throws Exception {
+        final String pkgname = getPackageName();
+        final File pkgdir = pkgname != null ? new File(dir, getPackageName()) : dir;
+        pkgdir.mkdirs();
+        final File out = new File(pkgdir, getClassName() + ".class");
+        out.createNewFile();
+        try (final FileOutputStream fos = new FileOutputStream(out)) {
+            fos.write(generateBytes());
+        }
+    }
+
+    public boolean isInterface() {
+        return isInterface;
+    }
+
+    public Integer getIndex() {
+        return index;
+    }
+}